V11第123题求助！！！
Refer to the exhibit. The network shown in the exhibit is running the RIPv2 routing protocol. The network
has converged, and the routers in this network are functioning properly. The FastEthernet0/0 interface on R1 goes
down. In which two ways will the routers in this network respond to this change? (Choose two.)
A. All routers will reference their topology database to determine if any backup routes to the 192.168.1.0 network
are known.
B. Routers R2 and R3 mark the route as inaccessible and will not accept any further routing updates from R1 until
their hold-down timers expire.
C. Because of the split-horizon rule, router R2 will be prevented from sending erroneous information to R1 about
connectivity to the 192.168.1.0 network.
D. When router R2 learns from R1 that the link to the 192.168.1.0 network has been lost, R2 will respond by sending a route back to R1 with an infinite metric to the 192.168.1.0 network. E. R1 will send LSAs to R2 and R3 informing them of this ch an ge, and then all routers will send periodic updates at an increased rate until the network again converges.
这道题的正确答案是哪个呀？？V11上的答案是：CD 而相关视频上却说是BD 求高手给指点，谢谢
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